Language-Learning Tools & Calculators
Free, practical tools for learning a language — estimate your hours to fluency, schedule spaced-repetition reviews, set a vocabulary pace, self-assess your CEFR level, track immersion hours, and keep a study streak.
Hours-to-Fluency Estimator
Estimate how long it takes to reach a CEFR level from your daily study time, your starting point, and how distant the language is.
Spaced-Repetition Review Scheduler
Project the SM-2 review dates for a vocabulary card so you revise just before you'd forget — the engine behind Anki.
Vocabulary Goal Calculator
Work out the words-per-day pace to hit a vocabulary target by a deadline, adjusted for how much you actually retain.
CEFR Self-Assessment Scorer
Rate your listening, reading, speaking, and writing to estimate your overall CEFR level — set by your weakest skill.
Immersion Hours Tracker
Log daily listening, reading, and watching to see total immersion hours and progress toward an input-hours goal.
Study-Streak Consistency Calculator
Mark the days you studied to see your current streak, longest streak, and overall consistency percentage.