Call tracking is one of the most misused signals in Google Ads. Many accounts set every call click as a primary conversion, training Smart Bidding to optimize for clicks, not qualified calls. The result is higher click volume and lower conversion quality.
What phone calls should Google Ads track?
Google Ads can track calls from call extensions (calls directly from the ad on mobile), calls through a dynamic forwarding number on the website, and mobile click-to-call interactions. Not all of these signals have equal value. Calls from a forwarding number with a minimum duration threshold set are usually the most reliable conversion signal for Smart Bidding.
Are call clicks the same as real calls?
No. A call click is when someone taps a phone number on a mobile device. It records intent to call, not a completed call or qualified lead. The user may never connect, may hang up immediately, may call a wrong number, or may be accidentally tapping. Call clicks should be tracked as secondary conversions only, never as primary signals for Smart Bidding.
Should calls be primary conversions in Google Ads?
Calls should only be set as primary conversions if they represent a genuine business outcome. The safest approach is to use a minimum call duration threshold. Calls under 30-60 seconds usually indicate a wrong number, automated system, or accidental click. A threshold based on your actual call data will exclude noise and train the algorithm on real prospects.
What call duration should count as a conversion?
There is no universal answer. A small business handling quick booking calls may qualify calls at 30-45 seconds. A professional services firm requiring full consultations may set 2-3 minutes. Review your actual call recordings over a 30-day period to determine the duration that separates real inquiries from noise.
How do bad call conversions hurt Smart Bidding?
If low-quality calls (accidental clicks, wrong numbers, 10-second disconnects) are set as primary conversions, Smart Bidding learns to optimize for them. The algorithm cannot distinguish a 10-second wrong number from a 5-minute qualified inquiry if both are counted as conversions. The result is bids optimized toward clicks that generate any call, rather than toward calls that generate business.
| Call Type | Should Track | Should Bid On (Primary) | Risk If Used as Primary | Notes |
|---|---|---|---|---|
| Call extension click (mobile) | Yes (secondary) | No | Counts intent, not outcome | Use as supplementary data only |
| Website forwarding number call | Yes | Yes, if duration threshold set | Low with threshold in place | Most reliable call signal |
| Calls under 30 seconds | Yes (for analysis) | No | High: mostly wrong numbers or disconnects | Exclude from primary via duration setting |
| Calls over threshold duration | Yes | Yes | Low | Set threshold based on your own data |
| After-hours calls to voicemail | Optional | No | Medium: outcome unknown | Consider separate tracking or exclusion |
| Call clicks from Display ads | Optional | No | High: low intent audience | Usually too low-intent for primary conversion |
Call extension setup
- –Call extensions (or call assets) are linked to relevant campaigns
- –Reporting calls from ads is enabled in call extension settings
- –Call conversion action is linked to the correct Google forwarding number
Duration threshold
- –Minimum call duration is set in the conversion action settings
- –Duration threshold is based on real call analysis, not a default
- –Very short calls (under 30 seconds) are excluded from primary conversion counting
Primary vs secondary designation
- –Call clicks (click-to-call) are set as secondary, not primary
- –Only qualified-duration calls from forwarding numbers are primary
- –Total primary conversion count is reviewed monthly for anomalies
Website call tracking
- –Dynamic number insertion is active if website call tracking is in use
- –Forwarding number renders correctly on mobile and desktop
- –Test call completed to confirm the number routes correctly and conversion fires