| Parameter | Value | Copy |
|---|---|---|
| {{ row.label }} | {{ row.value }} |
| Activity | MET | kcal / hr ({{ kgDisplay }} kg) | Copy |
|---|---|---|---|
| {{ a.label }} | {{ format(a.met, 1) }} | {{ format(a.met * kgDisplay * Number(calorie_factor || 1)) }} |
Calories burned are a practical way to describe the energy your body uses during activity, and they help you gauge effort and plan training or recovery with a clear target in mind. Enter your weight, choose an activity, and set a duration to see total energy used and a simple per hour rate so you can compare options and pace your sessions.
The estimate reflects typical intensity for each activity and scales with your body mass and time, so two people doing the same workout will see different numbers that still compare fairly. A short run for a 70 kilogram person, for example, can land around three hundred kilocalories for thirty minutes at a comfortable speed.
Results are estimates and can differ with fitness level, technique, temperature, terrain, and rest, so treat them as a helpful guide rather than an exact measurement. For clearer comparisons, keep your units consistent from one session to the next and enter realistic durations without rounding everything to whole hours.
This tool provides informational estimates and does not substitute professional advice.
The underlying quantity is energy expenditure in kilocalories over a session, derived from a constant activity intensity, your body mass, and elapsed time. Intensity is represented by a Metabolic Equivalent of Task (MET), a dimensionless multiplier that expresses effort relative to resting level for a named activity.
The calculator reports a per hour rate and a session total. The rate grows linearly with both MET and mass, while the total is the rate multiplied by time in hours. An optional multiplier adjusts the scale if you prefer the common convention that uses a small factor on top of the MET product.
Activities are listed with a single representative MET (for example, walking, running, cycling at typical speeds), so results compare like with like when you keep the same mass and factor settings. Near any boundary you enter, tiny input changes can move the total by tenths of a kilocalorie because the computation rounds to one decimal place.
| Symbol | Meaning | Unit/Datatype | Source |
|---|---|---|---|
| M | Metabolic Equivalent of Task (activity intensity) | dimensionless | Input (activity list) |
| m | Body mass | kg | Input (converted from kg or lb) |
| t | Duration | hr | Input (converted from minutes or hours) |
| f | Calorie factor | dimensionless | Input (default 1.00; optional) |
| r | Rate of energy expenditure | kcal / hr | Derived |
| C | Session total | kcal | Derived |
Weight in pounds is converted to kilograms by dividing by 2.20462. Minutes are converted to hours by dividing by 60. Totals are rounded to one decimal place; the display uses your locale’s decimal separator. The per hour rate is shown to one decimal place for consistency.
| Field | Type | Min | Max | Step/Pattern | Error Text | Placeholder |
|---|---|---|---|---|---|---|
| Weight value | Number | 0 | — | — | Enter a positive weight and duration to compute calories. | — |
| Weight unit | Option | — | — | kg or lb | — | — |
| Activity | Option | — | — | Preset list with MET | — | — |
| Duration value | Number | 0 | — | — | Enter a positive weight and duration to compute calories. | — |
| Duration unit | Option | — | — | min or hr | — | — |
| Calorie factor | Number | 0 | — | Step 0.01 | — | — |
| Input | Accepted Families | Output | Encoding/Precision | Rounding |
|---|---|---|---|---|
| Weight, duration, activity, factor | Numeric fields and select options | Total kcal, kcal / hr, activity list | Locale-formatted numbers | One decimal for key values |
| Data export | Clipboard and file download | Details, activity rates, structured summary | Comma-separated values and JSON text | As displayed |
Calculations run entirely in the browser. No network requests are used for inputs or results, and nothing is stored on a server. Copy and download actions operate on your device.
Identical inputs produce identical outputs. The timeline chart samples the session at one minute intervals up to 60 minutes, then adapts the sampling step to keep the plot readable for longer sessions.
Inputs are plain numbers and options; avoid pasting sensitive information into any free text fields. Clipboard actions require your permission. Downloads create local files that you control.
The computation follows the familiar MET × kg × hours structure. An optional 1.05 multiplier is offered as an “ACSM style” convention for kcal per hour.
No data is transmitted or stored server‑side. Clipboard and downloads occur on your device.
Energy expenditure is estimated by combining a representative activity intensity with your body mass and session duration to report a per hour rate and a total.
Pro tip: log the per hour rate for your usual activities to make quick comparisons later.
No. Inputs are handled in your browser, and copy or download actions create content on your device only.
It is a reasonable average for the listed activity at a representative pace. Individual physiology, conditions, and technique can shift the true value.
Weight accepts kilograms or pounds, duration accepts minutes or hours. All results are reported in kilocalories and kilocalories per hour.
It scales the rate and the total. The neutral setting is 1.00. Many practitioners use 1.05 as a conventional adjustment.
Charts require a compatible graphics layer. If it is unavailable, estimates still compute and display in text and tables.
The calculation works locally. If the graphics layer is not available offline, charts will not render, but totals and rates still appear.
No pricing or license terms are shown here. Use it as a planning aid and confirm details with your coach or clinician if needed.
If two activities differ by only a few kilocalories, treat them as equivalent for planning. Choose based on preference, time, or recovery needs.
Select the closest walking pace from the list, enter your weight and time, and read the total. Use the per hour rate to plan longer walks.