Pace Calculator

Use it for simple educational checks, trend tracking, or planning tasks like these: Find pace per kilometer after a run or walk. Find pace per mile for race planning. It can help you understand a number, but it cannot explain your whole health situation.

Enter the body, activity, date, or lab values exactly in the units shown on the page. Height, weight, age, sex, time, and activity level can change health estimates a lot, so treat each label like a rule instead of a suggestion. If you are unsure which option fits, choose the closest honest match and read the result as a rough estimate.

In plain language: Pace = total elapsed seconds divided by distance. Speed = distance divided by total time in hours. The pace display rounds to the nearest second per selected distance unit. Read the result together with the notes on the page, because health and fitness numbers often need personal context.

Use the result as a learning number, not a final answer about your body or health. The supporting lines can show categories, ranges, calories, dates, or targets, but those numbers still need context like age, medical history, pregnancy status, training level, and advice from a qualified professional.

Pace is time per distance, such as 5:00 per kilometer, so a lower pace is faster. Speed is distance per hour, such as 12.00 km/h, so a higher speed is faster.

Use total elapsed time for races, official comparisons, and anything where stops count. Use moving time only when you intentionally want to remove pauses, and do not compare it with elapsed-time results.

The calculator divides total seconds by distance, then rounds the displayed pace to the nearest second per mile or kilometer. Speed keeps more decimal detail so the two outputs can look slightly different after rounding.

This is a fitness planning calculator, not medical advice. Use total elapsed time or moving time consistently, and remember that hills, heat, terrain, stops, GPS error, and health limits can change effort. Use the calculator as a learning tool, then ask a qualified professional about decisions that affect care, pregnancy, medication, nutrition, or safety.

Check the units, date, and personal details before reading the answer. For example, pounds and kilograms, inches and centimeters, or a wrong activity level can change the result quickly. If the number feels surprising, rerun it slowly and compare it with the examples.

No. The calculator runs in your browser tab. Recent answers stay only on the page while you use it, and they are not sent to a server.