How to Weigh Yourself for Accurate Tracking
Consistency beats accuracy. It matters less what time you weigh than that you weigh at the same time every day. The most common recommendation:
- First thing in the morning — you've fasted overnight, so food and drink aren't adding weight
- After using the bathroom — removes one variable
- Before eating or drinking — coffee and breakfast change the number
- Same scale, same spot — scales vary by up to 1 kg between each other
Why Your Weight Fluctuates 1-3 kg (2-6 lb) Day to Day
This is normal and it's not fat. Daily swings come from:
- Water retention — salt, carbs, hormones, and heat all change water weight
- Food in your system — you literally weigh more after dinner than breakfast
- Glycogen — stored carbs hold water; as you burn through them the scale drops
- The "whoosh effect" — the scale often stays flat for a week, then drops suddenly as water flushes out
That's why this tracker draws a 7-day average line alongside your daily readings. The trend line is your real progress; the daily points are noise. Judge decisions on the trend, never a single number.
What's a Healthy Rate of Loss?
The widely cited sustainable rate is 0.5-1 kg (1-2 lb) per week. This tracker's advice engine treats that as the sweet spot:
- 0.5-1 kg/week — ideal: mostly fat, sustainable, easy to maintain
- Faster than 1.5 kg/week — risky: likely losing muscle and water, hard to keep off. The tracker will flag this.
- Slower than 0.3 kg/week — might need a calorie adjustment or more consistency
Your daily calorie need is your TDEE (Total Daily Energy Expenditure) — the calories you burn just living. Eating about 500 calories below it produces roughly 0.5 kg of loss per week. Fill in the advanced settings to see an estimate.
When the Scale Stalls (Plateaus)
A week or two of flat readings is normal. Before you panic:
- Check logging accuracy — oils, condiments, drinks and weekend eating quietly undo deficits
- Recalculate your needs — as you lose weight, your body burns fewer calories; your old deficit may now be maintenance
- Look at the trend, not the last 3 days — water can mask fat loss for a week
- Consider a diet break — a week at maintenance calories is a legitimate strategy many people use to push through
Frequently Asked Questions
Is this weight loss tracker really free?
Yes — free forever, no account, no app download, no sign-up. Your data lives in your browser only.
How often should I weigh myself?
Daily is ideal for trend analysis. Three times a week is the minimum for a meaningful trend. Once a week is too infrequent — a single anomalous reading distorts everything.
Why does my weight go up after a "good" day?
Normal. One day of water retention outweighs any real change. The 7-day average is the honest picture — check that instead.
Can I track weight gain (bulking) too?
Yes — set the goal weight above your start weight and the tracker works in reverse, showing gain toward your target.
Is my data saved anywhere?
No. Everything stays in your browser via localStorage. Clear your browser data or click "Start over" to remove it.
Disclaimer: This tool provides general tracking and informational advice only, not medical guidance. Consult a healthcare professional before starting any weight-loss program, especially if you have health conditions.