What is the difference between tilt and recline on an office chair?

Tilt vs. recline specification at OfficeFurniture2go.com is mechanism-specific: simple recline (backrest pivots at seat rear) vs. synchro-tilt (backrest and seat move at a coordinated 2:1 or 2.5:1 ratio) vs. knee-tilt (seat pivots at the front knee point, not the rear). Synchro-tilt is the commercial specification standard for ergonomic seating because it maintains thigh angle during recline. Simple recline on basic task chairs causes the seat front to rise during recline, compressing the thighs. Knee-tilt is a premium mechanism specification. Call 1-800-460-0858 for mechanism specification guidance.