Calorie Calculator — BMR, TDEE, Walking, Running & Biking

A calorie calculator answers two related but different questions: how many calories does the body burn just existing (BMR and TDEE), and how many additional calories does a specific activity like walking, running, or biking burn on top of that baseline. This page covers both, along with a running calorie calculator, a walk-and-calories calculator based on step count, and a bike calorie estimate — all using the same underlying activity-based calculation method. For a height-and-weight screening number to pair with calorie planning, see the BMI calculator, or browse all calculators.

BMR and TDEE: The Foundation of Calorie Planning

The Mifflin-St Jeor BMR Formula

Basal Metabolic Rate (BMR) is the number of calories the body burns at complete rest just to maintain basic functions — breathing, circulation, cell repair. This calculator uses the Mifflin-St Jeor equation, a widely used clinical standard:

Men: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) + 5

Women: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) − 161

Activity Multipliers and TDEE

Total Daily Energy Expenditure (TDEE) takes BMR and multiplies it by an activity factor to account for daily movement and exercise:

TDEE is the calorie planning baseline most people actually use — it represents roughly how many calories are burned in a typical day, which is the starting point for setting a calorie target for weight loss, maintenance, or gain.

Kcal vs. Calories — Are They the Same Thing?

Why "kcal" and "Calories" Are the Same Unit

This is one of the most common points of confusion in nutrition labeling. A "Calorie" (capital C), as used on nutrition labels and in everyday conversation about food and exercise, is actually a kilocalorie (kcal) — 1,000 small calories (lowercase c, a scientific unit rarely used outside of chemistry). So when a label says "200 Calories" or a fitness app says "200 kcal," they're referring to the exact same amount of energy. There's no meaningful difference to account for in kcal vs. calories when reading food labels or calorie-burn estimates — they're interchangeable in this everyday context.

Running Calorie Calculator: How It Works

Calories Burned Running: What Affects the Number

Calories burned running depend primarily on body weight, running pace, and duration. Heavier bodies and faster paces both burn more calories per minute, since more energy is required to move more mass over the same distance in less time. This calculator estimates calories burned running using MET (Metabolic Equivalent of Task) values specific to different running paces, combined with body weight and duration, following the standard formula:

Calories Burned = MET × Weight (kg) × Duration (hours)

Running MET values increase with pace — a slow jog might sit around 7-8 METs, while a fast run can reach 12+ METs, which is why pace matters as much as duration when estimating calories burned from a run.

Walk and Calories Calculator: Steps to Calories

Steps to Calories Calculator: The MET Method

A walk-and-calories calculator (or steps-to-calories calculator) uses the same MET-based approach as running, just with lower MET values that reflect walking's lower intensity — typically 2.5 to 4.5 METs depending on pace. Since step count alone doesn't capture pace or incline, converting steps to calories usually starts by converting step count to an approximate distance (based on average stride length), then applying the same calories-burned formula used for any activity.

Calories Walking Burned by Pace and Distance

Calories walking burned scales with both pace and distance covered — a brisk walk burns noticeably more per minute than a leisurely stroll, even over the same distance, because a faster pace raises the MET value used in the calculation.

Calculate Bike Calories

Calories Burned Cycling by Intensity

To calculate bike calories, this calculator uses cycling-specific MET values, which vary widely by intensity — leisurely cycling might sit around 4-6 METs, while vigorous or racing-pace cycling can reach 10+ METs. The same core formula applies: MET × weight × duration, with the MET value selected based on riding intensity.

Worked Examples: Calories Burned by Activity

Example: 30-Minute Run, Walk, and Bike Ride Compared

For a 70kg (154 lb) person over 30 minutes (0.5 hours):

This side-by-side comparison shows why running typically burns more calories per minute than walking or moderate cycling — the higher MET value reflects the greater metabolic demand of the activity, even over the identical 30-minute duration. The calculator uses published 2011 Compendium of Physical Activities codes (walking 3.5 MET at 2.8–3.2 mph, running 8.3 MET at 5 mph, cycling 6.8 MET at 10–11.9 mph), so a moderate 30-minute session for a 70 kg person is about 123 kcal walking, 291 kcal running, and 238 kcal cycling.

Restaurant Calorie Calculators — What This Tool Doesn't Include

Some people search for calorie calculators tied to a specific restaurant, like Chipotle, Starbucks, Subway, Dunkin, or McDonald's, expecting a menu-item-by-menu-item calorie lookup. To be transparent: this calculator does not include restaurant-specific menu databases. Restaurant nutrition information changes frequently and is published and maintained directly by each company — the most accurate, up-to-date source for a specific menu item's calorie count is always that restaurant's own official nutrition page or app, rather than a third-party estimate that can go out of date.

What this calculator does provide is the BMR, TDEE, and activity-based calorie-burn tools covered above — useful for figuring out an overall daily calorie target or how many calories a workout burned, which pairs naturally with checking a specific meal's calories on the restaurant's own official source.

Using This for Calorie Planning

Calorie planning generally starts with TDEE as a baseline, then adjusts from there depending on the goal. Weight from the BMI calculator is a screening figure only — it does not set a calorie target on its own.

• Weight maintenance — eating roughly at TDEE
• Weight loss — a moderate calorie deficit below TDEE (commonly 500 kcal/day for a gradual approximately 1 lb/week loss rate)
• Weight gain — a moderate calorie surplus above TDEE

Activity-based calculations (running, walking, biking) then factor into planning as either an addition to a fixed daily target, or as part of the activity multiplier already built into the TDEE calculation, depending on how consistently the activity happens each week.

Frequently Asked Questions