Enter the total talk time, hold time, after-call work time, and the number of calls into the calculator to determine the AHT (average handle time).
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AHT Formula
The following formula is used to calculate the average handle time in a contact center:
AHT = (TT + HT + ACWT) / C
- Where AHT is the average handle time (seconds)
- TT is the total talk time (seconds)
- HT is the total time on hold (seconds)
- ACWT is the total after-call work time (seconds)
- C is the total number of calls handled
What is AHT?
AHT (average handle time) is a contact center KPI that measures the average duration of a single customer interaction from start to finish. It encompasses three distinct phases: the time an agent spends actively speaking with the customer (talk time), any periods where the customer is placed on hold while the agent researches or consults (hold time), and the post-interaction wrap-up work such as logging notes, updating CRM records, or sending follow-up communications (after-call work).
AHT does not include time spent in the queue before an agent picks up, nor does it include IVR navigation time. Ring time is also excluded. The metric strictly captures the window during which an agent is actively engaged with or working on behalf of a specific customer.
AHT Components Breakdown
Talk Time typically accounts for 60-70% of total AHT. This is the live conversation between agent and customer. High talk time relative to hold time and ACW usually indicates that agents are resolving issues in real time rather than needing to research or escalate.
Hold Time generally represents 5-15% of AHT. Agents place customers on hold to look up account information, consult with supervisors, or verify policy details. Hold time above 20% of total AHT often signals knowledge gaps, poor tooling, or overly complex internal processes.
After-Call Work (ACW) accounts for 15-30% of AHT. This includes disposition coding, CRM updates, scheduling callbacks, generating tickets, and composing follow-up emails. ACW is the component most directly reducible through automation and better agent desktop tools.
AHT Benchmarks by Industry
The overall industry average AHT is approximately 6 minutes and 10 seconds (370 seconds). However, benchmarks vary significantly by sector due to differences in interaction complexity, regulatory requirements, and customer expectations.
| Industry | Average AHT | Primary Driver |
|---|---|---|
| Retail / E-commerce | 3 to 5 minutes | Order status, returns, simple product inquiries |
| IT / Tech Support | 4 min 40 sec | Troubleshooting, account access, software guidance |
| Telecommunications | 8 to 10 minutes | Billing disputes, plan changes, technical troubleshooting |
| Financial Services / Banking | 5 to 6 minutes | Account inquiries, fraud verification, loan applications |
| Insurance | 7 to 10 minutes | Claims processing, policy explanations, coverage changes |
| Healthcare | 6 to 8 minutes | Appointment scheduling, insurance verification, prescription refills |
| Government Services | 8 to 12 minutes | Eligibility verification, multi-step application processes |
| Utilities | 4 to 6 minutes | Billing questions, service start/stop, outage reporting |
AHT by Communication Channel
AHT varies substantially depending on the communication channel. Each channel has its own formula variant because the interaction mechanics differ.
Phone: The standard AHT formula applies directly. Phone interactions average 6 minutes and 10 seconds across industries and tend to produce the highest AHT because conversations happen in real time with no ability to handle multiple interactions simultaneously.
Live Chat: Chat AHT typically runs 3 to 5 minutes per interaction. Agents can handle 2 to 3 concurrent chat sessions, which means the per-agent throughput is higher even though individual chat AHT may appear similar to phone. Chat AHT measures the time from first agent message to conversation close, plus any wrap-up.
Email: Email AHT measures total agent working time on a ticket, not elapsed calendar time. Typical email handle times range from 4 to 8 minutes of active agent work, though the customer-perceived resolution time may span hours or days.
AHT and First Call Resolution: The Tradeoff
AHT and first call resolution (FCR) have an inverse tension that every contact center must manage. Pushing agents to minimize AHT can cause incomplete resolutions, which generate repeat contacts and ultimately increase total cost per resolution. The data shows a clear pattern in how call duration correlates with resolution rates:
| Call Duration | First Call Resolution Rate |
|---|---|
| 1 to 3 minutes | 73% |
| 3 to 5 minutes | 71% |
| 5 to 9 minutes | 69% |
| 10 to 15 minutes | 67% |
| Over 15 minutes | 62% |
Short calls correlate with higher FCR, but only up to a point. Calls under 3 minutes resolve 73% of issues on first contact, while calls exceeding 15 minutes drop to 62%. The key insight is that the drop is not linear. There is a steep decline after the 9-minute mark, suggesting that interactions lasting beyond that threshold are typically dealing with issues that may require escalation or callback regardless of how long the agent stays on the line.
What is Excluded from AHT
Several time categories are deliberately excluded from AHT because they fall outside the agent's direct control or are not part of the customer handling process. Queue wait time (the time a customer spends waiting before reaching an agent) is tracked separately as ASA (average speed of answer). IVR navigation time is excluded because it occurs before agent involvement. Scheduled breaks, team meetings, training sessions, and coaching fall under "shrinkage" and are measured independently. Transfer wait time (the gap while a customer is being routed to another department) is also generally excluded, though the new receiving agent's handle time starts a fresh AHT measurement.
Related Contact Center Metrics
AHT does not exist in isolation. It connects directly to several other operational and quality metrics that together form a complete picture of contact center performance.
Occupancy Rate measures the percentage of time agents spend handling contacts versus waiting for contacts. A center with low AHT but low occupancy may be overstaffed. The formula is: Occupancy = (Total Handle Time) / (Total Logged-In Time).
Cost Per Contact (CPC) ties directly to AHT. If a center's fully loaded agent cost is $25/hour and the AHT is 6 minutes, the labor cost per contact is approximately $2.50. Reducing AHT by 30 seconds across 100,000 monthly contacts saves roughly $20,800 per month in labor costs alone.
Customer Satisfaction (CSAT) has a nuanced relationship with AHT. Customers want fast resolution, but not at the expense of feeling rushed. Research shows that FCR is the single strongest predictor of CSAT, more so than AHT. A slightly longer call that resolves the issue completely will produce higher satisfaction than a short call that requires a callback.
Service Level (the percentage of calls answered within a target time, commonly 80% within 20 seconds) is affected by AHT because longer handle times reduce agent availability and increase queue times. Erlang C workforce planning models use AHT as a primary input for calculating staffing requirements.
Staffing Impact of AHT Changes
Small changes in AHT have outsized effects on staffing needs. Using Erlang C modeling, a center handling 1,000 calls per day with a 6-minute AHT targeting 80/20 service level needs approximately 85 agents. Reducing AHT to 5 minutes and 30 seconds drops the requirement to roughly 78 agents. That 30-second reduction translates to 7 fewer full-time positions, which at $40,000 annual cost per agent represents $280,000 in annual savings. This multiplier effect is why operations teams obsess over AHT: the financial leverage is substantial at scale.
