Daily KJ Intake Calculator

See what percentage of the 8,700 kJ daily reference a food item represents — and how much is left.

Daily Intake (8,700 kJ Reference)

Enter kilojoules (kJ) to see your share of the daily reference and remaining energy.

Kilojoules (kJ)

Quick presets:

Results will appear here

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General information only — not medical advice.

Common examples

Quick reference for common kJ values and their share of the 8,700 kJ daily reference.

500 kJ ≈ 5.7% of 8,700 kJ

Remaining: 8,200 kJ (1,960 kcal)

1,000 kJ ≈ 11.5% of 8,700 kJ

Remaining: 7,700 kJ (1,840 kcal)

2,000 kJ ≈ 23.0% of 8,700 kJ

Remaining: 6,700 kJ (1,601 kcal)

3,000 kJ ≈ 34.5% of 8,700 kJ

Remaining: 5,700 kJ (1,362 kcal)

5,000 kJ ≈ 57.5% of 8,700 kJ

Remaining: 3,700 kJ (884 kcal)

6,500 kJ ≈ 74.7% of 8,700 kJ

Remaining: 2,200 kJ (526 kcal)

Usage & Reference

Understanding how a single item contributes to daily reference energy
Comparing multiple items by their share of the daily reference
Estimating what's left in kJ when tracking label-style energy

This tool compares an item's kilojoules to a common label reference of 8,700 kJ per day. Percentage is calculated as (item kJ ÷ 8,700) × 100. We round displayed values for readability.

Questions about the 8,700 kJ reference

What does 8,700 kJ per day mean?

It’s a common daily reference value shown on food labels. It’s a general guide, not a personalised target.

How is the percentage calculated?

Percentage = (item kJ ÷ 8,700 kJ) × 100. Results are rounded for readability.

What does “Remaining” show?

It shows how many kilojoules are left to reach the 8,700 kJ reference, plus the kcal equivalent for quick comparison.

Is this medical or dietary advice?

No. This tool is for general information only and is not medical or dietary advice.

Learn & Explore

What does 8,700 kJ/day mean?

Understand the daily reference value

kJ to calories guide

Learn how to convert kJ to calories

Food Energy Toolkit

All kJ ↔ kcal tools in one place

kJ and calories FAQ

Quick answers about labels, units, and formulas

Tip: Use the Toolkit to pick the right calculator for labels (per 100g vs per serve), meal totals, and daily reference values.