Nutrition Tools | eNutritionFacts

Core data tools

Start here for lookup, comparison, recipe analysis, label conversion, and practical food data interpretation.

Core data

Nutrition Lookup

Search cached USDA FoodData Central records by food name or FDC ID, then review per-100 g values and source notes.

Search food data

Food comparison

Semantic Food Comparison Engine

Compare two cached USDA/FDC food records on a clearer per-100 g basis before writing a food-vs-food guide.

Compare foods

Recipe analysis

Recipe Nutrition Calculator

Estimate recipe nutrition from ingredient text, serving size, and source-backed food records when available.

Analyze a recipe

Label interpretation

Serving Size & %DV Converter

Translate serving sizes and % Daily Value estimates into easier nutrition-label reading context.

Convert label values

Research and interpretation tools

Use these when you need nutrient ranking, preparation context, bioavailability notes, and relationship-based nutrient interpretation.

Food discovery

Nutrient Ranking Tool

Rank cached food records by selected nutrients to support research, editorial briefs, and source-aware comparisons.

Rank foods

Preparation context

Preparation Impact Estimator

Compare raw and prepared food records while keeping water-loss and retention explanations careful.

Compare preparation states

Context explainer

Bioavailability Context Explainer

Add cautious context around nutrient forms, food matrix limits, and why food data is not the same as personal absorption advice.

Explain nutrient context

Interaction graph

Nutrient Interaction Graph Explorer

Explore enhancer, inhibitor, and context-dependent nutrient relationships with source-linked educational notes.

Explore interactions

Planning and synthesis tools

Use these only when you need macro targets, meal examples, or protein-context exploration.

Planning support

Macro Target Estimator

Estimate calorie, protein, fat, and carbohydrate targets from planning inputs such as body size, activity, and goal context.

Estimate macros

Meal ideas

Meal Synthesizer

Turn macro targets into meal examples and compare foods against calorie, protein, fat, and carbohydrate constraints.

Build a meal idea

Protein context

Amino Acid Complementarity Estimator

Explore how protein sources can complement each other in amino acid context without turning the result into personal dietary advice.

Estimate amino context

Verification and governance tools

Use these for source provenance, structured data governance, and editorial transparency before publishing data claims.

Data provenance

Nutrient Data Provenance Comparator

Compare two cached FDC records for one nutrient and explain the difference as source provenance, not a validated trend.

Compare provenance

Verification ledger

Nutrition Data Provenance Ledger

Verify source trails behind generated nutrition outputs using source hashes, transformation hashes, and local ledger status.

Verify a data trail

Evidence intake

Research Contribution Portal

Submit PMID, DOI, or source-backed evidence notes for review before they become internal evidence items.

Submit evidence

Dataset catalog

Nutrition Dataset Export Catalog

Publish citation-aware dataset manifests, export packages, source attribution, and provenance hashes for reuse.

Browse datasets

Schema governance

Semantic Graph Engine

Generate and validate connected JSON-LD drafts for nutrition entities, datasets, tool pages, and source-backed pages.

Validate schema