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Fuel Lens
Personal nutrition and biometric analysis
Turn health data into a clearer picture.
Explore nutrition, food, energy, and biometric records in one place. Fuel Lens turns the exports you already have into clear, practical views that stay in your browser.
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Fuel Lens trends
Your data, over time
Average energy
3,155 kcal
41 recorded days
Average weight
73 kg
26 measurements
Energy and weight
Real daily values from the public demo history
Calorie intake (kcal)Weight (kg)
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What Fuel Lens does
The tools you need to make your data useful.
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See the full picture
Review energy, macros, micronutrients, goals, and daily progress in one place.
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Find meaningful trends
Explore nutrient, weight, and biometric trends using your own records.
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Compare foods
Compare foods by nutrient density and see how choices contribute to your selected nutrients.
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Set useful targets
Customize nutrient goals and put your energy data in context.
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Your imported records stay in your browser unless you choose to export or back them up.
How it works
From export to insight in three steps.
01
Export
Download a supported data export from your tracking service.
02
Import
Load the files in Fuel Lens and review what was recognized.
03
Analyze
Use dashboards, comparisons, trends, goals, and reports to explore.
Try it out
See your nutrition in a new way.
Explore interactive examples with sample data.
Demo nutrient values use the closest available BLS 4.0 food match; values for similar or unmatched products are approximations. BLS data by the Max Rubner-Institut, licensed under CC BY 4.0 (DOI: 10.25826/Data20251217-134202-0).
Energy and macronutrients
Explore an interactive daily summary using the anonymized sample data.
3,155.03 kcal
average daily energy across 41 days
- Basal metabolic rate
- 1,864 kcal
- Average exercise
- 1,565.39 kcal/day
Energy3,155.03 kcalaverage per day
Protein146.71 gaverage per day
Total Carbs382.98 gaverage per day
Fat99.29 gaverage per day
Average daily targets
- Protein: 171 g
- Total Carbs: 471 g
- Fat: 95 g
Vitamins and zinc
Average daily demo intake compared with Fuel Lens reference values.
B1 (Thiamine)2.74 mgaverage per day
Top food contributors: Oatmeal, Steel Cut, Dry (0.33 mg/day) · Milk, 1 1/2% Fat (0.13 mg/day) · Beans, White, Mature Seeds, Canned (0.13 mg/day)
B2 (Riboflavin)2.4 mgaverage per day
Top food contributors: Milk, 1 1/2% Fat (0.25 mg/day) · Joghurt, 1,8% Fett (0.14 mg/day) · Beef Liver (0.13 mg/day)
B3 (Niacin)37 mgaverage per day
Top food contributors: Chicken Breast, Boneless, Skinless, Raw (6.39 mg/day) · Chicken Breast, Skinless, Cooked (2.22 mg/day) · Chicken, Breast, Boneless, Skinless, Raw (2.18 mg/day)
B5 (Pantothenic Acid)10.9 mgaverage per day
Top food contributors: Chicken Breast, Boneless, Skinless, Raw (0.87 mg/day) · Milk, 1 1/2% Fat (0.74 mg/day) · Oatmeal, Steel Cut, Dry (0.6 mg/day)
B6 (Pyridoxine)2.89 mgaverage per day
Top food contributors: No contributors
B9 (Folate)627.48 mcgaverage per day
Top food contributors: Lettuce, Green Leaf (53.07 mcg/day) · Oatmeal, Steel Cut, Dry (51.49 mcg/day) · Strawberries, Frozen, Unsweetened (49.67 mcg/day)
B12 (Cobalamin)8.47 mcgaverage per day
Top food contributors: No contributors
Vitamin A3,806.92 mcgaverage per day
Top food contributors: Beef Liver (1,636.85 mcg/day) · Lettuce, Green Leaf (445.32 mcg/day) · Spinach, Cooked from Frozen (210.65 mcg/day)
Vitamin C263.42 mgaverage per day
Top food contributors: Strawberries, Frozen, Unsweetened (41.54 mg/day) · Mango, frozen (16.39 mg/day) · Strawberries, Fresh (14.84 mg/day)
Vitamin D142.57 IUaverage per day
Top food contributors: Mushrooms, Cooked from Fresh (27.16 IU/day) · Salmon, Atlantic, Wild, Cooked (21.73 IU/day) · Trout, Rainbow, Farmed, Cooked (10.79 IU/day)
Explore your nutrition ratios
Compare demo ratios with the latest available day and reference ranges.
Omega 6 / Omega 3
1.52:1
Demo data · latest day · 2026-08-31
Reference range: 1–5
Zinc / Copper
6.32:1
Demo data · latest day · 2026-08-31
Reference range: 8–15
Gauge values and recommendation ranges use shared ratio definitions; demo data is fixed and anonymous.
Top energy contributors
Foods contributing most to energy across the demo history.
| Food | Amount per day (kcal) | % of total intake |
|---|---|---|
| Gummi Bears | 287.88 kcal/day | 9.12 % |
| Oatmeal, Steel Cut, Dry | 194.76 kcal/day | 6.17 % |
| Spaghetti Noodles, White, Cooked in Salted Water | 153.45 kcal/day | 4.86 % |
| Milk, 1 1/2% Fat | 81.13 kcal/day | 2.57 % |
| Potato, Boiled with Skin | 74.48 kcal/day | 2.36 % |
Compare foods
Side-by-side nutrient comparison for the selected foods, per 100 kcal.
| Nutrient | Bread, White, Commercially Prepared | Gnocchi (edited) | Oatmeal, Steel Cut, Dry |
|---|---|---|---|
| NRF 9.3 Score | 28.7 %91.7 % data · raw 258.1 | 41 %91.7 % data · raw 368.9 | 53.8 %91.7 % data · raw 484.4 |
| Weight | 36.76 g | 65.79 g | 28.49 g |
| Protein | 3.19 g | 2.55 g | 4.53 g |
| Fat | 1.09 g | 0.4 g | 1.66 g |
| Net Carbs | 18.58 g | 20.99 g | 15.19 g |
| Calcium | 8.82 mg | 13.62 mg | 19.09 mg |
| Copper | 0.04 mg | 0.04 mg | 0.12 mg |
| Iron | 0.32 mg | 0.26 mg | 1.11 mg |
| Magnesium | 8.01 mg | 9.41 mg | 20.23 mg |
| Manganese | 0.2 mg | 0.09 mg | 1.41 mg |
| Phosphorus | 32.68 mg | 32.76 mg | 99.43 mg |
| Potassium | 51.29 mg | 101.91 mg | 87.75 mg |
| Selenium | 0 | 0 | 0 |
| Sodium | 208.9 mg | 342.11 mg | 1.79 mg |
| Zinc | 0.25 mg | 0.18 mg | 1.04 mg |
Food names and nutrient values come directly from the public demo dataset. Scores and rankings use the same NRF 9.3 model and per 100 kcal basis as Foods Compare.
Best protein per 100 kcal
Find the best food sources for every nutrient per 100 g or 100 kcal on the Foods page.
| Food | Weight (g per 100 kcal) | Protein (g per 100 kcal) | NRF 9.3 Density Score |
|---|---|---|---|
| Egg White, Raw | 238.1 g | 23.57 g | 27.8 %Data 83.3 % · Raw 250.4 |
| Brotsalat Thunfisch | 93.46 g | 23.55 g | 59.7 %Data 83.3 % · Raw 537 |
| Chicken Breast, Skinless, Cooked | 73.53 g | 21.53 g | 48.7 %Data 91.7 % · Raw 438 |
| Shrimp, Frozen, RAW | 114.94 g | 21.38 g | 57.9 %Data 91.7 % · Raw 521.2 |
| Schnitzel, Pork, fried | 64.1 g | 20.75 g | 33.9 %Data 91.7 % · Raw 305.5 |
| Beef, lean, rump custom, raw | 90.91 g | 20.09 g | 44.8 %Data 91.7 % · Raw 403.3 |
| Chicken Breast, Boneless, Skinless, Raw | 91.74 g | 20.01 g | 48.5 %Data 91.7 % · Raw 436.8 |
| Chicken, Breast, Boneless, Skinless, Raw | 91.74 g | 20.01 g | 48.5 %Data 91.7 % · Raw 436.8 |
| Sopa de Pescado con Tomates, Fish Soup with Tomatoes | 227.27 g | 18.18 g | 79.3 %Data 91.7 % · Raw 713.5 |
| Magerquark | 151.52 g | 17.95 g | 49.6 %Data 91.7 % · Raw 446.1 |
Ranked with the Foods nutrient values normalized per 100 kcal.
Trends
Weight and calorie intake over the complete available demo history, using the same trend charts, statistics, and correlations as the Trends view.
Energy · mean 3,155.03 kcal
41 recorded days · median 3,173.9 kcal
Weight · mean 73.42 kg
26 measurements · median 73.49 kg
| Date | Calories (kcal) | Weight (kg) |
|---|---|---|
| 2026-07-22 | 4,022.68 kcal | 72.91 kg |
| 2026-07-23 | 2,089.97 kcal | 72.92 kg |
| 2026-07-24 | 2,144.62 kcal | 73.56 kg |
| 2026-07-25 | 3,347.25 kcal | 73.33 kg |
| 2026-07-26 | 2,782 kcal | 73.49 kg |
| 2026-07-27 | 3,195.19 kcal | 73.5 kg |
| 2026-07-28 | 2,835.85 kcal | 73.66 kg |
| 2026-07-29 | 2,527.92 kcal | 74.14 kg |
| 2026-07-30 | 2,775.48 kcal | 72.15 kg |
| 2026-07-31 | 2,682.69 kcal | — |
| 2026-08-01 | 3,189.65 kcal | — |
| 2026-08-02 | 3,051.34 kcal | — |
| 2026-08-03 | 2,701.57 kcal | — |
| 2026-08-04 | 3,823.84 kcal | — |
| 2026-08-05 | 3,309.34 kcal | — |
| 2026-08-06 | 3,892.68 kcal | — |
| 2026-08-07 | 3,484.93 kcal | — |
| 2026-08-08 | 3,790.35 kcal | — |
| 2026-08-09 | 3,226.57 kcal | — |
| 2026-08-10 | 1,789.88 kcal | 74.61 kg |
| 2026-08-11 | 4,173.53 kcal | 72.84 kg |
| 2026-08-12 | 2,024.58 kcal | 72 kg |
| 2026-08-13 | 3,545.14 kcal | 71.81 kg |
| 2026-08-14 | 2,303.58 kcal | — |
| 2026-08-15 | 2,628.61 kcal | — |
| 2026-08-16 | 3,942.07 kcal | — |
| 2026-08-17 | 3,012.4 kcal | 75.07 kg |
| 2026-08-18 | 3,307.5 kcal | 73.81 kg |
| 2026-08-19 | 2,387.27 kcal | 72.71 kg |
| 2026-08-20 | 1,942.99 kcal | 72.83 kg |
| 2026-08-21 | 5,018.01 kcal | 74.56 kg |
| 2026-08-22 | 4,558.24 kcal | 74.02 kg |
| 2026-08-23 | 4,468.75 kcal | — |
| 2026-08-24 | 2,842.85 kcal | — |
| 2026-08-25 | 2,170.57 kcal | 74.21 kg |
| 2026-08-26 | 3,173.9 kcal | 73.58 kg |
| 2026-08-27 | 4,399.46 kcal | 73.44 kg |
| 2026-08-28 | 2,489.1 kcal | 73.61 kg |
| 2026-08-29 | 3,895.08 kcal | 73.3 kg |
| 2026-08-30 | 4,661.77 kcal | 73.12 kg |
| 2026-08-31 | 1,746.9 kcal | 73.75 kg |
Nutrient values in this demonstration are calculated from selected food entries in the Bundeslebensmittelschlüssel (BLS), version 4.0. Max Rubner-Institut (2025), licensed under CC BY 4.0. Source and attribution. Food names use English BLS entries, including similar entries when an exact match is unavailable. Nutrient values for similar foods are estimates; supplements and entries without a usable gram amount are excluded from totals. These examples are descriptive and not medical advice.
Private nutrition analysis
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Fuel Lens runs in your browser and stores imported food diaries, biometrics, and settings locally by default. You can review, export, or remove your information, and choose whether to connect optional backups.