Jitter Buffer Calculator

Calculate optimal jitter buffer size for VoIP and real-time applications

Mean packet delay variation measured across the network path. Typical VoIP networks: 1-20ms.
ms
Worst-case packet delay variation (99th percentile). Should be measured over representative time period.
ms
Time between packets. VoIP default is 20ms (50 packets/sec). Some codecs use 10ms or 30ms.
ms
Maximum acceptable late-packet discard rate from the jitter buffer. VoIP typically tolerates 1-3%.
%

Jitter Buffer Recommendations

Recommended Static Bufferms
Conservative Buffer (Max Jitter)ms
Adaptive Buffer Rangems
Added Latency (One-Way)ms

Quality Impact

Buffer Overflow Probability%
Packets Bufferedpackets
Effective MOS Impact
Estimated MOS (G.711 baseline)
References: ITU-T G.114 (one-way delay), ITU-T G.107 (E-model), RFC 3550 (RTP). Buffer sizing uses statistical jitter distribution with configurable confidence interval.