---
title: "Years to Days — yr to d converter"
description: "1 year = 365.2425 days. Convert years to days with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/years-to-days/
site: "At One Place"
---

# Years to days

**1 year in days: 1 yr = 365.2425 d**

d = yr × 365.2425

To convert years to days, multiply by 365.2425. The table below gives the values people look up most often, and the converter works for any number.

## Years to days table

*Common year values converted to days.*

| Years | Days |
| --- | --- |
| 1 yr | 365.2425 |
| 2 yr | 730.485 |
| 3 yr | 1,095.7275 |
| 4 yr | 1,460.97 |
| 5 yr | 1,826.2125 |
| 10 yr | 3,652.425 |
| 15 yr | 5,478.6375 |
| 20 yr | 7,304.85 |
| 25 yr | 9,131.0625 |
| 30 yr | 10,957.275 |
| 40 yr | 14,609.7 |
| 50 yr | 18,262.125 |
| 75 yr | 27,393.188 |
| 100 yr | 36,524.25 |
| 250 yr | 91,310.625 |
| 500 yr | 182,621.25 |
| 1,000 yr | 365,242.5 |

## How the conversion works

The relationship is d = yr × 365.2425. Both units measure time, so the conversion is a fixed factor that never changes.

> Year: Mean Gregorian year, 365.2425 days.

## Common questions

### How many days are in one year?

One year equals 365.2425 days. d = yr × 365.2425.

### How do you convert years to days?

Use d = yr × 365.2425. So 10 yr is 3,652.425 d.

### How many years are in one day?

One day equals 0.0027379 years, which is the reverse of the conversion above.

### Is there more than one kind of year?

Mean Gregorian year, 365.2425 days.

## Related pages

- [Days to Years](https://atoneplace.net/convert/days-to-years/)
- [Years to Seconds](https://atoneplace.net/convert/years-to-seconds/)
- [Years to Milliseconds](https://atoneplace.net/convert/years-to-milliseconds/)
- [Years to Minutes](https://atoneplace.net/convert/years-to-minutes/)
- [Years to Hours](https://atoneplace.net/convert/years-to-hours/)
- [Years to Weeks](https://atoneplace.net/convert/years-to-weeks/)
- [Years to Months](https://atoneplace.net/convert/years-to-months/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)