diff --git a/package.json b/package.json
index 7db20656..b210cd44 100644
--- a/package.json
+++ b/package.json
@@ -74,6 +74,7 @@
   "dependencies": {
     "@types/react-calendar": "^3.0.0",
     "@wojtekmaj/date-utils": "^1.0.3",
+    "@wojtekmaj/predict-input-value": "^1.0.0",
     "get-user-locale": "^1.2.0",
     "make-event-props": "^1.1.0",
     "merge-class-names": "^1.1.1",
diff --git a/src/DateInput.jsx b/src/DateInput.jsx
index 3c1ed4c7..527b66c4 100644
--- a/src/DateInput.jsx
+++ b/src/DateInput.jsx
@@ -108,6 +108,28 @@ function findInput(element, property) {
   return nextElement;
 }
 
+function isInputValid(input) {
+  if (!input.validity.valid) {
+    return false;
+  }
+
+  const { value } = input;
+
+  if (!value) {
+    return false;
+  }
+
+  const rawValue = Number(value);
+  const min = Number(input.getAttribute('min'));
+  const max = Number(input.getAttribute('max'));
+
+  if (rawValue < min || rawValue > max) {
+    return false;
+  }
+
+  return true;
+}
+
 function focus(element) {
   if (element) {
     element.focus();
@@ -192,9 +214,9 @@ export default class DateInput extends PureComponent {
       )
     ) {
       if (nextValue) {
-        nextState.year = getYear(nextValue);
-        nextState.month = getMonthHuman(nextValue);
-        nextState.day = getDate(nextValue);
+        nextState.year = getYear(nextValue).toString();
+        nextState.month = getMonthHuman(nextValue).toString();
+        nextState.day = getDate(nextValue).toString();
       } else {
         nextState.year = null;
         nextState.month = null;
@@ -352,7 +374,7 @@ export default class DateInput extends PureComponent {
       return;
     }
 
-    const { value } = input;
+    const { maxLength, value } = input;
     const max = input.getAttribute('max');
 
     /**
@@ -361,7 +383,7 @@ export default class DateInput extends PureComponent {
      * However, given 2, smallers possible number would be 20, and thus keeping the focus in
      * this field doesn't make sense.
      */
-    if ((value * 10 > max) || (value.length >= max.length)) {
+    if ((value * 10 > max) || (value.length >= maxLength)) {
       const property = 'nextElementSibling';
       const nextInput = findInput(input, property);
       focus(nextInput);
@@ -375,7 +397,7 @@ export default class DateInput extends PureComponent {
     const { name, value } = event.target;
 
     this.setState(
-      { [name]: value ? parseInt(value, 10) : null },
+      { [name]: value },
       this.onChangeExternal,
     );
   }
@@ -397,9 +419,9 @@ export default class DateInput extends PureComponent {
       }
 
       const [yearString, monthString, dayString] = value.split('-');
-      const year = parseInt(yearString, 10);
-      const monthIndex = parseInt(monthString, 10) - 1 || 0;
-      const day = parseInt(dayString, 10) || 1;
+      const year = Number(yearString);
+      const monthIndex = Number(monthString) - 1 || 0;
+      const day = Number(dayString) || 1;
 
       const proposedValue = new Date();
       proposedValue.setFullYear(year, monthIndex, day);
@@ -431,12 +453,10 @@ export default class DateInput extends PureComponent {
 
     if (formElements.every((formElement) => !formElement.value)) {
       onChange(null, false);
-    } else if (
-      formElements.every((formElement) => formElement.value && formElement.validity.valid)
-    ) {
-      const year = parseInt(values.year, 10);
-      const monthIndex = parseInt(values.month, 10) - 1 || 0;
-      const day = parseInt(values.day || 1, 10);
+    } else if (formElements.every(isInputValid)) {
+      const year = Number(values.year);
+      const monthIndex = Number(values.month) - 1 || 0;
+      const day = Number(values.day || 1);
 
       const proposedValue = new Date();
       proposedValue.setFullYear(year, monthIndex, day);
diff --git a/src/DateInput.spec.jsx b/src/DateInput.spec.jsx
index e17baf89..7fd86be1 100644
--- a/src/DateInput.spec.jsx
+++ b/src/DateInput.spec.jsx
@@ -115,9 +115,9 @@ describe('DateInput', () => {
     const customInputs = component.find('input[data-input]');
 
     expect(nativeInput.prop('value')).toBe('2017-09-30');
-    expect(customInputs.at(0).prop('value')).toBe(9);
-    expect(customInputs.at(1).prop('value')).toBe(30);
-    expect(customInputs.at(2).prop('value')).toBe(2017);
+    expect(customInputs.at(0).prop('value')).toBe('9');
+    expect(customInputs.at(1).prop('value')).toBe('30');
+    expect(customInputs.at(2).prop('value')).toBe('2017');
   });
 
   it('shows a given date in all inputs correctly given array of Date objects (12-hour format)', () => {
@@ -134,9 +134,9 @@ describe('DateInput', () => {
     const customInputs = component.find('input[data-input]');
 
     expect(nativeInput.prop('value')).toBe('2017-09-30');
-    expect(customInputs.at(0).prop('value')).toBe(9);
-    expect(customInputs.at(1).prop('value')).toBe(30);
-    expect(customInputs.at(2).prop('value')).toBe(2017);
+    expect(customInputs.at(0).prop('value')).toBe('9');
+    expect(customInputs.at(1).prop('value')).toBe('30');
+    expect(customInputs.at(2).prop('value')).toBe('2017');
   });
 
   it('shows a given date in all inputs correctly given ISO string (12-hour format)', () => {
@@ -153,9 +153,9 @@ describe('DateInput', () => {
     const customInputs = component.find('input[data-input]');
 
     expect(nativeInput.prop('value')).toBe('2017-09-30');
-    expect(customInputs.at(0).prop('value')).toBe(9);
-    expect(customInputs.at(1).prop('value')).toBe(30);
-    expect(customInputs.at(2).prop('value')).toBe(2017);
+    expect(customInputs.at(0).prop('value')).toBe('9');
+    expect(customInputs.at(1).prop('value')).toBe('30');
+    expect(customInputs.at(2).prop('value')).toBe('2017');
   });
 
   itIfFullICU('shows a given date in all inputs correctly given Date (24-hour format)', () => {
@@ -173,9 +173,9 @@ describe('DateInput', () => {
     const customInputs = component.find('input[data-input]');
 
     expect(nativeInput.prop('value')).toBe('2017-09-30');
-    expect(customInputs.at(0).prop('value')).toBe(2017);
-    expect(customInputs.at(1).prop('value')).toBe(9);
-    expect(customInputs.at(2).prop('value')).toBe(30);
+    expect(customInputs.at(0).prop('value')).toBe('2017');
+    expect(customInputs.at(1).prop('value')).toBe('9');
+    expect(customInputs.at(2).prop('value')).toBe('30');
   });
 
   itIfFullICU('shows a given date in all inputs correctly given array of Date objects (24-hour format)', () => {
@@ -193,9 +193,9 @@ describe('DateInput', () => {
     const customInputs = component.find('input[data-input]');
 
     expect(nativeInput.prop('value')).toBe('2017-09-30');
-    expect(customInputs.at(0).prop('value')).toBe(2017);
-    expect(customInputs.at(1).prop('value')).toBe(9);
-    expect(customInputs.at(2).prop('value')).toBe(30);
+    expect(customInputs.at(0).prop('value')).toBe('2017');
+    expect(customInputs.at(1).prop('value')).toBe('9');
+    expect(customInputs.at(2).prop('value')).toBe('30');
   });
 
   itIfFullICU('shows a given date in all inputs correctly given ISO string (24-hour format)', () => {
@@ -213,9 +213,9 @@ describe('DateInput', () => {
     const customInputs = component.find('input[data-input]');
 
     expect(nativeInput.prop('value')).toBe('2017-09-30');
-    expect(customInputs.at(0).prop('value')).toBe(2017);
-    expect(customInputs.at(1).prop('value')).toBe(9);
-    expect(customInputs.at(2).prop('value')).toBe(30);
+    expect(customInputs.at(0).prop('value')).toBe('2017');
+    expect(customInputs.at(1).prop('value')).toBe('9');
+    expect(customInputs.at(2).prop('value')).toBe('30');
   });
 
   it('shows empty value in all inputs correctly given null', () => {
diff --git a/src/DateInput/DayInput.jsx b/src/DateInput/DayInput.jsx
index 05f697ac..b3a9e2f1 100644
--- a/src/DateInput/DayInput.jsx
+++ b/src/DateInput/DayInput.jsx
@@ -28,7 +28,7 @@ export default function DayInput({
   })();
 
   function isSameMonth(date) {
-    return date && year === getYear(date) && month === getMonthHuman(date);
+    return date && Number(year) === getYear(date) && Number(month) === getMonthHuman(date);
   }
 
   const maxDay = safeMin(currentMonthMaxDays, isSameMonth(maxDate) && getDate(maxDate));
@@ -44,6 +44,8 @@ export default function DayInput({
   );
 }
 
+const isValue = PropTypes.oneOfType([PropTypes.string, PropTypes.number]);
+
 DayInput.propTypes = {
   ariaLabel: PropTypes.string,
   className: PropTypes.string.isRequired,
@@ -51,13 +53,13 @@ DayInput.propTypes = {
   itemRef: PropTypes.func,
   maxDate: isMaxDate,
   minDate: isMinDate,
-  month: PropTypes.number,
+  month: isValue,
   onChange: PropTypes.func,
   onKeyDown: PropTypes.func,
   onKeyUp: PropTypes.func,
   placeholder: PropTypes.string,
   required: PropTypes.bool,
   showLeadingZeros: PropTypes.bool,
-  value: PropTypes.number,
-  year: PropTypes.number,
+  value: isValue,
+  year: isValue,
 };
diff --git a/src/DateInput/DayInput.spec.jsx b/src/DateInput/DayInput.spec.jsx
index 86378fab..102133aa 100644
--- a/src/DateInput/DayInput.spec.jsx
+++ b/src/DateInput/DayInput.spec.jsx
@@ -120,7 +120,7 @@ describe('DayInput', () => {
   });
 
   it('displays given value properly', () => {
-    const value = 11;
+    const value = '11';
 
     const component = mount(
       <DayInput
diff --git a/src/DateInput/Input.jsx b/src/DateInput/Input.jsx
index 2414ed6c..744d66cd 100644
--- a/src/DateInput/Input.jsx
+++ b/src/DateInput/Input.jsx
@@ -2,6 +2,7 @@ import React from 'react';
 import PropTypes from 'prop-types';
 import mergeClassNames from 'merge-class-names';
 import updateInputWidth, { getFontShorthand } from 'update-input-width';
+import predictInputValue from '@wojtekmaj/predict-input-value';
 
 /* eslint-disable jsx-a11y/no-autofocus */
 
@@ -45,27 +46,51 @@ function updateInputWidthOnFontLoad(element) {
   document.fonts.addEventListener('loadingdone', onLoadingDone);
 }
 
-function getSelectionString() {
-  if (typeof window === 'undefined') {
-    return null;
-  }
+function addLeadingZero(value, max) {
+  return `0${value}`.slice(-(`${max}`.length));
+}
+
+function makeOnKeyDown({
+  max, min, onChange, showLeadingZeros,
+}) {
+  return function onKeyDown(event) {
+    switch (event.key) {
+      case 'ArrowUp':
+      case 'ArrowDown': {
+        event.preventDefault();
+
+        const { target: input } = event;
+        const { value } = input;
+
+        const numericValue = Number(value);
+        const rawNextValue = numericValue + (event.key === 'ArrowUp' ? 1 : -1);
+
+        const limitedRawNextValue = Math.min(max, Math.max(min, rawNextValue));
+
+        const hasLeadingZero = showLeadingZeros && limitedRawNextValue < 10;
+        const nextValue = (hasLeadingZero
+          ? addLeadingZero(limitedRawNextValue, max)
+          : limitedRawNextValue
+        );
 
-  return window.getSelection().toString();
+        input.value = nextValue;
+        onChange(event);
+
+        break;
+      }
+      default:
+    }
+  };
 }
 
-function makeOnKeyPress(maxLength) {
-  /**
-   * Prevents keystrokes that would not produce a number or when value after keystroke would
-   * exceed maxLength.
-   */
+function makeOnKeyPress(max) {
   return function onKeyPress(event) {
-    const { key, target: input } = event;
-    const { value } = input;
+    const { key } = event;
 
     const isNumberKey = !isNaN(parseInt(key, 10));
-    const selection = getSelectionString();
+    const nextValue = predictInputValue(event);
 
-    if (isNumberKey && (selection || value.length < maxLength)) {
+    if (isNumberKey && (nextValue <= max)) {
       return;
     }
 
@@ -92,8 +117,16 @@ export default function Input({
   step,
   value,
 }) {
-  const hasLeadingZero = showLeadingZeros && value !== null && value < 10;
-  const maxLength = max.toString().length;
+  const hasLeadingZero = (
+    showLeadingZeros
+    && (value !== null && value !== undefined)
+    && value.toString().length < 2
+  );
+
+  const onKeyDownInternal = makeOnKeyDown({
+    max, min, onChange, showLeadingZeros,
+  });
+  const onKeyPressInternal = makeOnKeyPress(max);
 
   return [
     (hasLeadingZero && <span key="leadingZero" className={`${className}__leadingZero`}>0</span>),
@@ -111,12 +144,19 @@ export default function Input({
       disabled={disabled}
       inputMode="numeric"
       max={max}
+      maxLength={`${max}`.length}
       min={min}
       name={name}
       onChange={onChange}
       onFocus={onFocus}
-      onKeyDown={onKeyDown}
-      onKeyPress={makeOnKeyPress(maxLength)}
+      onKeyDown={(event) => {
+        onKeyDownInternal(event);
+
+        if (onKeyDown) {
+          onKeyDown(event);
+        }
+      }}
+      onKeyPress={onKeyPressInternal}
       onKeyUp={(event) => {
         updateInputWidth(event.target);
 
@@ -137,12 +177,14 @@ export default function Input({
       }}
       required={required}
       step={step}
-      type="number"
+      type="text"
       value={value !== null ? value : ''}
     />,
   ];
 }
 
+const isValue = PropTypes.oneOfType([PropTypes.string, PropTypes.number]);
+
 Input.propTypes = {
   ariaLabel: PropTypes.string,
   autoFocus: PropTypes.bool,
@@ -160,5 +202,5 @@ Input.propTypes = {
   required: PropTypes.bool,
   showLeadingZeros: PropTypes.bool,
   step: PropTypes.number,
-  value: PropTypes.number,
+  value: isValue,
 };
diff --git a/src/DateInput/MonthInput.jsx b/src/DateInput/MonthInput.jsx
index 41865085..3db25da3 100644
--- a/src/DateInput/MonthInput.jsx
+++ b/src/DateInput/MonthInput.jsx
@@ -14,7 +14,7 @@ export default function MonthInput({
   ...otherProps
 }) {
   function isSameYear(date) {
-    return date && year === getYear(date);
+    return date && Number(year) === getYear(date);
   }
 
   const maxMonth = safeMin(12, isSameYear(maxDate) && getMonthHuman(maxDate));
@@ -30,6 +30,8 @@ export default function MonthInput({
   );
 }
 
+const isValue = PropTypes.oneOfType([PropTypes.string, PropTypes.number]);
+
 MonthInput.propTypes = {
   ariaLabel: PropTypes.string,
   className: PropTypes.string.isRequired,
@@ -43,6 +45,6 @@ MonthInput.propTypes = {
   placeholder: PropTypes.string,
   required: PropTypes.bool,
   showLeadingZeros: PropTypes.bool,
-  value: PropTypes.number,
-  year: PropTypes.number,
+  value: isValue,
+  year: isValue,
 };
diff --git a/src/DateInput/MonthInput.spec.jsx b/src/DateInput/MonthInput.spec.jsx
index 3210b50c..30d90a9e 100644
--- a/src/DateInput/MonthInput.spec.jsx
+++ b/src/DateInput/MonthInput.spec.jsx
@@ -120,7 +120,7 @@ describe('MonthInput', () => {
   });
 
   it('displays given value properly', () => {
-    const value = 11;
+    const value = '11';
 
     const component = mount(
       <MonthInput
diff --git a/src/DateInput/MonthSelect.jsx b/src/DateInput/MonthSelect.jsx
index 21368988..fccf2f86 100644
--- a/src/DateInput/MonthSelect.jsx
+++ b/src/DateInput/MonthSelect.jsx
@@ -21,7 +21,7 @@ export default function MonthSelect({
   ...otherProps
 }) {
   function isSameYear(date) {
-    return date && year === getYear(date);
+    return date && Number(year) === getYear(date);
   }
 
   const maxMonth = safeMin(12, isSameYear(maxDate) && getMonthHuman(maxDate));
@@ -70,6 +70,8 @@ export default function MonthSelect({
   );
 }
 
+const isValue = PropTypes.oneOfType([PropTypes.string, PropTypes.number]);
+
 MonthSelect.propTypes = {
   ariaLabel: PropTypes.string,
   className: PropTypes.string.isRequired,
@@ -84,6 +86,6 @@ MonthSelect.propTypes = {
   placeholder: PropTypes.string,
   required: PropTypes.bool,
   short: PropTypes.bool,
-  value: PropTypes.number,
-  year: PropTypes.number,
+  value: isValue,
+  year: isValue,
 };
diff --git a/src/DateInput/MonthSelect.spec.jsx b/src/DateInput/MonthSelect.spec.jsx
index 5a3adacf..912a0564 100644
--- a/src/DateInput/MonthSelect.spec.jsx
+++ b/src/DateInput/MonthSelect.spec.jsx
@@ -90,7 +90,7 @@ describe('MonthSelect', () => {
   });
 
   it('displays given value properly', () => {
-    const value = 11;
+    const value = '11';
 
     const component = mount(
       <MonthSelect
diff --git a/src/DateInput/YearInput.jsx b/src/DateInput/YearInput.jsx
index 8055d538..96b6fcc2 100644
--- a/src/DateInput/YearInput.jsx
+++ b/src/DateInput/YearInput.jsx
@@ -37,6 +37,8 @@ export default function YearInput({
   );
 }
 
+const isValue = PropTypes.oneOfType([PropTypes.string, PropTypes.number]);
+
 YearInput.propTypes = {
   ariaLabel: PropTypes.string,
   className: PropTypes.string.isRequired,
@@ -49,6 +51,6 @@ YearInput.propTypes = {
   onKeyUp: PropTypes.func,
   placeholder: PropTypes.string,
   required: PropTypes.bool,
-  value: PropTypes.number,
+  value: isValue,
   valueType: isValueType,
 };
diff --git a/src/DateInput/YearInput.spec.jsx b/src/DateInput/YearInput.spec.jsx
index e9bc75af..00f4d071 100644
--- a/src/DateInput/YearInput.spec.jsx
+++ b/src/DateInput/YearInput.spec.jsx
@@ -76,7 +76,7 @@ describe('YearInput', () => {
   });
 
   it('displays given value properly', () => {
-    const value = 2018;
+    const value = '2018';
 
     const component = mount(
       <YearInput
diff --git a/yarn.lock b/yarn.lock
index 19eeb228..97e2e74a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1760,6 +1760,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@wojtekmaj/predict-input-value@npm:^1.0.0":
+  version: 1.0.1
+  resolution: "@wojtekmaj/predict-input-value@npm:1.0.1"
+  checksum: fdbf2a22de81dd3fd23e4a5319bf40c166c705b661bd01dc1084f3c9fad73945ceca45675d42154463447414612a3bf03035f7086e523d7b5d5c442bb31902f9
+  languageName: node
+  linkType: hard
+
 "abab@npm:^2.0.3":
   version: 2.0.4
   resolution: "abab@npm:2.0.4"
@@ -6711,6 +6718,7 @@ fsevents@^2.1.2:
     "@types/react-calendar": ^3.0.0
     "@wojtekmaj/date-utils": ^1.0.3
     "@wojtekmaj/enzyme-adapter-react-17": ^0.3.1
+    "@wojtekmaj/predict-input-value": ^1.0.0
     babel-eslint: ^10.0.0
     enzyme: ^3.10.0
     eslint: ^7.12.0